A Non-interpenetrated Microporous Bi-pillared-Layer Framework: Synthesis, Structure and Photoluminescence Properties

A non-interpenetrated microporous bi-pillared-layer framework of Zn(II), {[Zn(hip)(4,4'-bipy)](DMA)center dot(4H(2)O)}(n) (1) (H(2)hip = 5-hydroxyisophthalic acid; 4,4'-bipy = 4,4'-bipyridine; DMA = N,N'-diethylformamide) composed of mixed ligand system has been synthesized and structurally characterized. The hip linkers form a 2D corrugated sheet of {Zn(hip)}(n) by linking the secondary building unit of Zn-2(CO2)(2) in the bc plane, which are further connected by double 4,4'-bipy pillars resulting in a bi-pillared-layer type 3D framework. The 3D framework is non-interpenetrated and exhibits a 3D channel structure occupied by the guest DMA molecules. The thermal stability and luminescent properties were also investigated.